Lewis, J. P., & Uphoff, N. T. (1988). Strengthening the poor: What have we learned? Transaction Books.

Lewis, John P., and Norman Thomas Uphoff. Strengthening the Poor: What Have We Learned? New Brunswick, USA: Transaction Books, 1988.

Lewis, John P., and Norman Thomas Uphoff. Strengthening the Poor: What Have We Learned? Transaction Books, 1988.